Method and apparatus for evaluating field display functionality

Details Method and apparatus for evaluating field display functionality Method and apparatus for evaluating field display functionality

1996-02-01

1998-08-25

Kostak, Victor R.

Television

Monitoring, testing, or measuring

348189, H04N 1700

Patent

active

057987882

ABSTRACT:
A method and apparatus for creating and using an encoded bitstream to evaluate a video decoder. The bitstream contains a sequence of pictures or frames such that when a video decoder decodes the bitstream correctly, a desired visible pattern is produced on a video display. Specifically, various display parameters or flags are varied in the bitstream to test the video decoder's ability to implement display features such as "3:2 pulldown". For example, the bitstream is capable of demonstrating incorrect decoding of the top.sub.-- field.sub.-- first and repeat.sub.-- first.sub.-- field flags by a MPEG compliant video decoder.

REFERENCES:
patent: 5051827 (1991-09-01), Fairhurst
patent: 5313280 (1994-05-01), Straus
patent: 5499050 (1996-03-01), Baldes et al.
patent: 5565998 (1996-10-01), Coombs et al.
patent: 5602586 (1997-02-01), Schauer et al.

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